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Physics - Vectors Question with Solution | TestHub

PhysicsVectorsAddition/SubtractionEasy2 minPYQ_2020

PhysicsEasysingle choice

If a vector $A = 2 i + 2 j + 3 k$ and $B = 3 i + 6 j + nk$ are perpendicular to each other, then the value of $n$ is

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Solution:

If two vectors are perpendicular, then the dot product is zero. $A = 2 i + 2 j + 3 k B = 3 i + 6 j + nk A \cdot B = 0 => 6 + 12 + 3 n = 0 \Rightarrow> 18 = - 3 n \Rightarrow n = - 6$ Hence the value of $n$ is $- 6$ .

Stream:MHT_CETSubject:PhysicsTopic:VectorsSubtopic:Addition/Subtraction

⏱ 2mℹ️ Source: PYQ_2020

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